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Physiology Quiz -Physiology of Hearing - Part 2

The auditory system is responsible for converting sound waves in the environment into electrical signals that the brain can receive and utilize as useful information about the sound characteristics of the external environment. Test your basic knowledge of auditory physiology by taking this simple quiz.

(1) The coiled, fluid-filled cavity within the bony labyrinth of the inner ear, where the hearing (auditory) structures of the inner ear are located is referred to as the __________.

(2) In each human cochlea, there are approximately __________ hair cells.

(A) 3,500

(B) 5,000

(C) 10,000

(D) 15,000

(E) 50,000

(3) In each human cochlea, there are approximately __________ inner hair cells (IHCs).

(A) 3,500

(B) 12,000

(C) 25,000

(D) 35,000

(E) 50,000

(4) In each human cochlea, there are approximately __________ outer hair cells (OHCs).

(A) 3,500

(B) 12,000

(C) 25,000

(D) 35,000

(E) 50,000

(5) In humans, the outer ears (i.e., ear flaps) continue to grow in size throughout the lifespan.